Boyle, Robert, New experiments physico-mechanicall, touching the spring of the air and its effects, 1660

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="013/01/079.jpg" pagenum="39"/>
              ſtopple may be lifted up without any dif­
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              ficulty at all. </s>
            </p>
            <p type="main">
              <s>By ſeveral other of the Experiments
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              afforded us by our Engine, the ſame no­
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              tion of the great and equal preſſure of the
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              free Air upon the Bodies it environs,
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              might be here manifeſted, but that we
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              think it not ſo fit to anticipate ſuch Ex­
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              periments: And therefore ſhall rather
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              employ a few lines to clear up a difficulty
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              touching this matter, which we have ob­
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              ſerv'd to have troubled ſome even of the
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              Philoſophical and Mathematical Specta­
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              tors of our Engine, who have wonder'd
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              that we ſhould talk of the Air exquiſitely
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              ſhut up in our Receiver, as if it were all
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              one with the preſſure of the Atmoſphere;
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              whereas the thick and cloſe body of the
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              Glaſs, wholly impervious to the Air, does
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              manifeſtly keep the incumbent Pillar of
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              the Atmoſphere from preſſing in the leaſt
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              upon the Air within the Glaſs, which it
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              can no where come to touch. </s>
              <s>To eluci­
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              date a little this matter, let us conſider,
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              That if a man ſhould take a fleece of
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              Wool, and having firſt by compreſſing it
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              in his hand reduc'd it into a narrower com­
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              paſs, ſhould nimbly convey and ſhut it
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              cloſe up into a Box juſt fit for it, though </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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